You'll have to do some digging.
The registers are mapped flatly
(int registers, fp registers, misc registers). You're probable getting
one of the latter.
Ali
On Thu, 15 Sep 2011 15:30:33 -0400, Edward
Kim wrote:
In case of cpu->readIntReg(renamed_reg), the following
error messages are displayed and abnormally stopped.
m5.opt:
build/ALPHA_SE/cpu/o3/regfile.hh:90: uint64_t
PhysRegFile::readIntReg(PhysRegIndex) [with Impl = O3CPUImpl]: Assertion
`reg_idx < numPhysicalIntRegs' failed.
Program aborted at cycle
1393000
Aborted
In case of cpu->readIntReg(src_idx), I see incorrect
value like 0x2f2f2f2f2f2f2f2f. The value is never changed regardless of
execution of different instructions.
Ed
On Thu, Sep 15, 2011 at 2:58
PM, Ali Saidi wrote:
Something like cpu->readIntReg(renamed_reg);
Ali
On Thu, 15 Sep 2011 14:44:59 -0400, Edward Kim wrote:
Hi
I
want to look into the register value when register is ready in rename
stage.
What can I do for it?
Specifically, I want to check the register
value at line number 1022 in file src/cpu/o3/rename_impl.hh.
Thanks,
Ed
file src/cpu/o3/rename_impl.hh
973 template 974 inline
void
975 DefaultRename::renameSrcRegs(DynInstPtr &inst, ThreadID tid)
976 {
977 assert(renameMap[tid] != 0);
978
979 unsigned
num_src_regs = inst->numSrcRegs();
980
981 // Get the architectual
register numbers from the source and
982 // destination operands, and
redirect them to the right register.
983 // Will need to mark
dependencies though.
984 for (int src_idx = 0; src_idx < num_src_regs;
src_idx++) {
985 RegIndex src_reg = inst->srcRegIdx(src_idx);
.......
.......
1006 inst->flattenSrcReg(src_idx, flat_src_reg);
1007
1008 //
Look up the source registers to get the phys. register they've
1009 //
been renamed to, and set the sources to those registers.
1010
PhysRegIndex renamed_reg = renameMap[tid]->lookup(flat_src_reg);
1011
1012 DPRINTF(Rename, "[tid:%u]: Looking up arch reg %i, got "
1013
"physical reg %i.n", tid, (int)flat_src_reg,
1014 (int)renamed_reg);
1015
1016 inst->renameSrcReg(src_idx, renamed_reg);
1017
1018 // See
if the register is ready or not.
1019 if
(scoreboard->getReg(renamed_reg) == true) {
1020 DPRINTF(Rename,
"[tid:%u]: Register %d is ready.n",
1021 tid, renamed_reg);
1022 /*
================== looking into the register value here
================= */
1023 inst->markSrcRegReady(src_idx);
1024 } else
{
1025 DPRINTF(Rename, "[tid:%u]: Register %d is not ready.n",
1026
tid, renamed_reg);
1027
}
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